CN101224654A - Adjusting method of close-packed optical fiber array imaging and laser imaging device thereof - Google Patents
Adjusting method of close-packed optical fiber array imaging and laser imaging device thereof Download PDFInfo
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- CN101224654A CN101224654A CNA2007100728752A CN200710072875A CN101224654A CN 101224654 A CN101224654 A CN 101224654A CN A2007100728752 A CNA2007100728752 A CN A2007100728752A CN 200710072875 A CN200710072875 A CN 200710072875A CN 101224654 A CN101224654 A CN 101224654A
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Abstract
The invention relates to a correction method of a fiber compact array imaging and a laser imaging device where the method is applied; wherein, the fiber compact array comprises a plurality of fibers which are arranged along lines and inclined by a certain angle corresponding to the prearranged direction of an image plane. The correction method comprises that image signals which are respectively corresponding to all fibers in the fiber compact array are received; the image signals are respectively delayed in the shift register of an FPGA; all delay image signals drive the laser sources which are corresponding to all the fibers so as to image the image signals which are synchronously received on the image plane sequentially with prearranged interval through the fiber compact array. By adopting the method, the image signals which are synchronously received by the FPGA are delayed so as to lead the image signals to be output with prearranged interval and matched with the movement of the image plane in order to be imaged in the same line which is parallel to the prearranged direction, thus realizing the correction process; meanwhile, the invention has the advantages of high integrated level, easy realization, simple structure, fast operation speed, stable operation, low malfunction ratio, etc.
Description
[technical field]
The present invention relates to the bearing calibration of a kind of optical fiber close-packed array imaging, more specifically relate to a kind of bearing calibration of the optical fiber close-packed array imaging based on FPGA and the laser image forming apparatus that uses this method.
[background technology]
At present the laser image forming apparatus of widely used laser photocomposing machine be divided into two kinds of He-Ne Lasers imaging and semiconductor laser imagings.In the semiconductor laser imaging system, generally adopt semiconductor laser as light source, utilize the optical fiber close-packed array that the light that semiconductor laser sent is imaged on the picture plane (film surface) by optical lens.As shown in Figure 1, in the Chinese invention patent application 200410028158.6 of title for " realizing luminous point connects airtight in the optical fiber solid matter linear array method and device ", excessive in order to overcome the luminous point spacing that optical fiber that the optical fiber crust caused produces, be placed to the axial A of film setter drum optical fiber close-packed array 1 angled, so that on the horizontal line that is parallel to the axial A of film setter drum, realize the solid matter of luminous point 12, improve row thus according to quality.But need carry out different delay process (correction) this moment to each luminous point (raster data) that should export synchronously, so that it is synchronously the raster data that receives acts on the corresponding semiconductor laser instrument constantly and cooperates the rotation of film setter drum to beat on the same horizontal line at film in difference, the same with received picture signal to guarantee whole imaging.In the above-mentioned patent application, by monostable type delay counter, d type flip flop, position frequency divider and fifo queue memory (FIFO) respectively to the output of delaying time of each circuit-switched data, wherein a plurality of delay counter serially concatenateds are to produce the pulse daley of a succession of different delayed time length, cooperating d type flip flop, position frequency divider to produce the asynchronous read signal of the data flow displacement output among the control FIFO, finish trimming process thus.Complex structure, integrated level are low, the speed of service waits shortcoming slowly but this time-delay mechanism has.
[summary of the invention]
To be used in the prior art in order solving that time-delay mechanism structure complexity, integrated level that the optical fiber close-packed array proofreaies and correct are low, the speed of service waits technical problem slowly, to the present invention proposes a kind of bearing calibration of the optical fiber close-packed array imaging based on field-programmable logic array (FPGA) and the laser image forming apparatus that uses this method.
The present invention solves and is used in the prior art that time-delay mechanism structure complexity, integrated level that the optical fiber close-packed array proofreaies and correct are low, the speed of service waits the technical scheme that technical problem adopted to be slowly: the bearing calibration of a kind of optical fiber close-packed array imaging is provided, this optical fiber close-packed array comprises that this bearing calibration comprises: a. receives the picture signal that corresponds respectively to each road optical fiber in the optical fiber close-packed array along multi-channel optical fibre arranged in a straight line and relatively as the predetermined direction inclination certain angle on plane; B. picture signal is delayed time in the shift register of FPGA respectively; C. utilize the picture signal of respectively delaying time to drive the LASER Light Source corresponding so that image in the predetermined time interval order on the picture plane through the picture signal that the optical fiber close-packed array will receive synchronously with each road optical fiber.
According to one preferred embodiment of the present invention, step c further comprises: move the picture plane relative to the optical fiber close-packed array, so that the picture signal that receives images in as the plane on the same straight line of parallel predetermined direction synchronously.
According to one preferred embodiment of the present invention, step b comprises: b1. defines the signal array with respective length corresponding with each road optical fiber in FPGA; B2. responding the picture signal that synchronizing clock signals will be corresponding with each road optical fiber deposits in the respective signal array respectively; B3. responding synchronizing clock signals is shifted to the signal array; B4. respond the picture signal that synchronizing clock signals output is positioned at the array end.
According to one preferred embodiment of the present invention, step b1 comprises: the length of signal array depends on the distance of corresponding optical fiber with respect to first optical fiber in end of optical fiber close-packed array.
According to one preferred embodiment of the present invention, step b1 comprises: the frequency of synchronizing clock signals depends on the translational speed on picture plane.
According to one preferred embodiment of the present invention, this bearing calibration further comprises: utilize single-chip microcomputer to FPGA transmission configuration data.
The present invention solves and is used in the prior art that time-delay mechanism structure complexity, integrated level that the optical fiber close-packed array proofreaies and correct are low, the speed of service waits the technical scheme that technical problem adopted to be slowly: a kind of laser image forming apparatus, and laser image forming apparatus comprises: the drum that is used for fixing film and can rotates around axis; The optical fiber close-packed array of the axis inclination certain angle of Guing relatively; With the corresponding LASER Light Source of each road optical fiber in the optical fiber close-packed array; Be used to receive the data-interface of the picture signal that corresponds respectively to each road optical fiber, it is characterized in that: laser image forming apparatus further comprises the FPGA that is connected with data-interface, each picture signal that data-interface receives is delayed time in the shift register of FPGA, and each picture signal of delaying time drives each LASER Light Source so that the picture signal that will receive synchronously is imaged on the straight line that is parallel to bulging axis.
According to one preferred embodiment of the present invention, FPGA defines corresponding with each the road optical fiber respectively signal array with respective length within it, the response synchronizing clock signals will be corresponding with each road optical fiber picture signal deposit in respectively in the respective signal array, the response synchronizing clock signals is shifted to the signal array and exports the picture signal that is positioned at the array end.
According to one preferred embodiment of the present invention, this laser image forming apparatus further comprises the single-chip microcomputer that is used for to FPGA transmission configuration data.
According to one preferred embodiment of the present invention, this laser image forming apparatus further comprises the rotary encoder that is used for the rotation of drum synchronously and is connected with rotary encoder and sends the synchronizing signal processing module of synchronizing clock signals based on the synchronizing signal that rotary encoder provided to FPGA.
By adopting said method and structure, utilizing FPGA that the picture signal of synchronous reception is delayed time makes picture signal image on the same horizontal line as moving of plane with output of predetermined time interval order and cooperation, realize trimming process thus, have the integrated level height simultaneously, realize advantages such as easy, simple in structure, that speed fast, stable operation, fault rate are low.
[description of drawings]
Fig. 1 is the schematic diagram of prior art inclination optical fiber close-packed array imaging;
Fig. 2 is the schematic block diagram of laser photocomposing machine of the present invention;
Fig. 3 is the FB(flow block) of the time-delay process of FPGA in the laser photocomposing machine of the present invention;
Fig. 4 be in the laser photocomposing machine of the present invention single-chip microcomputer to the FB(flow block) of the layoutprocedure of FPGA.
[specific embodiment]
Below in conjunction with accompanying drawing and with the laser photocomposing machine with 32 road optical fiber close-packed arrays be example the present invention is described in detail, but the apparent the present invention of those skilled in the art is equally applicable to the laser image forming apparatus that other uses inclination optical fiber close-packed array.
As shown in Figure 2, Fig. 2 is the schematic block diagram of laser photocomposing machine of the present invention.In the laser photocomposing machine of present embodiment, comprise the drum 21 that is used for fixing film and can rotates around axis; The optical fiber close-packed array 22 of the axis inclination certain angle of drum 21 relatively, optical fiber close-packed array 22 comprise 32 road optical fiber that are in line and arrange; With the corresponding LASER Light Source 23 of each road optical fiber in the optical fiber close-packed array 22; Be used to receive the data-interface 24 of the picture signal that corresponds respectively to each road optical fiber.At this moment, since optical fiber close-packed array 22 the axis A of drum 21 is angled relatively.For the picture signal that receives synchronously originally from computer can be imaged on the same horizontal line of film, need to cooperate the rotation of drum 21 that each picture signal is carried out the order time-delay, so that each picture signal is exported with the predetermined time interval order.
For this reason, the laser photocomposing machine of present embodiment further comprises the FPGA 25 that is connected with data-interface 24.The picture signal that data-interface 24 receives is synchronously delayed time respectively in the shift register of FPGA 25.Subsequently, utilize the picture signal order driving laser light source 23 of respectively delaying time, the laser signal that LASER Light Source 23 is sent is imaged on the picture plane (the film faces of drum 21 tops) through focusing system (if desired) after corresponding optical fiber transmits.At this moment, cooperate the rotation of drum 21, the picture signal that receives synchronously originally can be imaged on the straight line of the axis A of parallel drum 21 in the picture plane with the predetermined time interval order, finish trimming process thus.Laser photocomposing machine also comprises the single-chip microcomputer 26 that is used for to FPGA 25 transmission configuration data.In addition, laser photocomposing machine further comprises the rotary encoder 27 of the rotation that is used for synchronous drum 21 and the synchronizing signal that provided according to rotary encoder 27 sends the synchronizing signal processing module 28 of synchronizing clock signals to FPGA 25.
As shown in Figure 3, Fig. 3 is the FB(flow block) of FPGA running in the laser photocomposing machine of the present invention.FPGA 25 adopts the EP1C3T114C8 chip in the present embodiment.FPGA 25 main operation following steps:
A. define I/O port, synchronised clock port and reseting port corresponding to 32 road optical fiber;
B. define the signal array of 31 different lengths and first via picture signal is directly outputed to output port, being equivalent to the signal array corresponding with first via optical fiber is 0;
C. respond synchronizing clock signals and deposit each road picture signal in corresponding signal array respectively;
D. responding synchronizing clock signals is shifted to described signal array;
E. respond the picture signal that synchronizing clock signals output is positioned at the array end.
Wherein, because the picture signal of each road optical fiber is exported with the predetermined time interval order, then need the delay time of each road picture signal to increase successively, thereby need set the length of respective signal array with respect to the distance of first optical fiber in end of optical fiber close-packed array 22 according to corresponding optical fiber.First optical fiber of distance pairing number of signals group length of optical fiber far away more is big more.In addition, also need to set and be used for the synchronizing clock signals of displacement synchronously, with the rotation that realizes output image signal output and drum 21 synchronously.
Synchronizing clock signals can adopt multiple mode to provide.In the present embodiment, utilize the rotation of rotary encoder 27 synchronous drums 21 and utilize the tach signal of 28 pairs of rotary encoders 27 of synchronizing signal processing module to carry out signal and handle the back and provide synchronizing clock signals, realize the rotation of drum 21 and carrying out synchronously of optical fiber close-packed array imaging thus for FPGA 25.
Referring to Fig. 4, Fig. 4 be in the laser photocomposing machine of the present invention single-chip microcomputer to the FB(flow block) of the layoutprocedure of FPGA.In the power up of whole system, need utilize 26 couples of FPGA of single-chip microcomputer 25 to carry out data configuration, wherein ports such as the NCONFIG of FPGA 25, DCLK, DATA0, CONF_DONE, NSTATUS are connected respectively to the corresponding I/O port of single-chip microcomputer 26, and the course of work of this single-chip microcomputer comprises:
A. define I/O port and array of data, the FPGA configuration data is put into array of data;
B. when producing negative pulse, NCONFIG starts layoutprocedure;
C. wait for that NSTATUS becomes high level;
D. at the DCLK rising edge, the configuration data in the array of data is moved into FPGA 25 through DATA0;
E. after configuration data all correctly moved into objective chip inside, the saltus step of CONF_DONE signal was high, and configuration is finished.
In the above-described embodiments, only the present invention has been carried out exemplary description, but those skilled in the art can design various embodiments according to different actual needs under the situation of the scope and spirit that do not break away from the present invention and protected.
Claims (10)
1. the bearing calibration of optical fiber close-packed array imaging, described optical fiber close-packed array comprise that described bearing calibration comprises along multi-channel optical fibre arranged in a straight line and relatively as the predetermined direction inclination certain angle on plane:
A. receive the picture signal that corresponds respectively to each road optical fiber in the described optical fiber close-packed array;
B. described picture signal is delayed time in the shift register of FPGA respectively;
C. utilize each described time-delay picture signal to drive the LASER Light Source corresponding so that image on the described picture plane with the predetermined time interval order through the picture signal that described optical fiber close-packed array will receive synchronously with described each road optical fiber.
2. the bearing calibration of optical fiber close-packed array according to claim 1 imaging, it is characterized in that: described step c further comprises: move described picture plane relative to described optical fiber close-packed array, so that the picture signal of described synchronous reception images on the same straight line of parallel described predetermined direction in as the plane described.
3. the bearing calibration of optical fiber close-packed array according to claim 2 imaging is characterized in that: described step b comprises:
B1. in described FPGA, define the signal array with respective length corresponding with described each road optical fiber;
B2. responding synchronizing clock signals deposits in the picture signal corresponding with described each road optical fiber in the respective signal array respectively;
B3. responding synchronizing clock signals is shifted to described signal array;
B4. respond the picture signal that synchronizing clock signals output is positioned at the array end.
4. the bearing calibration of optical fiber close-packed array according to claim 3 imaging is characterized in that: described step b1 comprises: the length of described signal array depends on the distance of corresponding optical fiber with respect to first optical fiber in end of described optical fiber close-packed array.
5. the bearing calibration of optical fiber close-packed array according to claim 4 imaging is characterized in that: described step b1 comprises: the frequency of described synchronizing clock signals depends on the translational speed on described picture plane.
6. the bearing calibration of optical fiber close-packed array according to claim 1 imaging is characterized in that: described bearing calibration further comprises: utilize single-chip microcomputer to described FPGA transmission configuration data.
7. laser image forming apparatus, described laser image forming apparatus comprises:
Being used for fixing film also can be around the drum of axis rotation;
The optical fiber close-packed array of the axis inclination certain angle of described relatively drum;
With the corresponding LASER Light Source of each road optical fiber in the described optical fiber close-packed array;
Be used to receive the data-interface of the picture signal that corresponds respectively to described each road optical fiber, it is characterized in that: described laser image forming apparatus further comprises the FPGA that is connected with described data-interface, each described picture signal that described data-interface receives is delayed time in the shift register of described FPGA, and each picture signal of delaying time drives each described LASER Light Source so that the picture signal that will receive synchronously is imaged on the straight line of the axis that is parallel to described drum.
8. laser image forming apparatus according to claim 7, it is characterized in that: described FPGA defines corresponding with described each the road optical fiber respectively signal array with respective length within it, the response synchronizing clock signals deposits the picture signal corresponding with described each road optical fiber respectively in the respective signal array, simultaneously described signal array is shifted and exports the picture signal that is positioned at the array end.
9. laser image forming apparatus according to claim 8 is characterized in that: described laser image forming apparatus further comprises the single-chip microcomputer that is used for to described FPGA transmission configuration data.
10. laser image forming apparatus according to claim 8 is characterized in that: described laser image forming apparatus further comprises the rotary encoder of the rotation that is used for synchronous described drum and is connected with described rotary encoder and sends the synchronizing signal processing module of described synchronizing clock signals based on the synchronizing signal that described rotary encoder provided to described FPGA.
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| CNB2007100728752A CN100537233C (en) | 2007-01-19 | 2007-01-19 | Adjusting method of close-packed optical fiber array imaging and laser imaging device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406048A (en) * | 2016-11-25 | 2017-02-15 | 深圳市东方宇之光科技股份有限公司 | Resolution ratio switching method for drum imaging and device thereof |
| CN110967929A (en) * | 2018-09-30 | 2020-04-07 | 深圳市印之明科技有限公司 | System and method for adjusting light spot dislocation scanning time sequence of photoetching machine |
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| DK31791D0 (en) * | 1991-02-22 | 1991-02-22 | Purup Electronics A S | ILLUMINATION DEVICE |
| CN1301857C (en) * | 2003-06-28 | 2007-02-28 | 项建龙 | Light splitting method for realizing Multipath output on laser phototypographic composing machine and its system |
| CN1586887A (en) * | 2004-07-23 | 2005-03-02 | 深圳市东方宇之光电子科技有限公司 | Method and device for realiznig multiple light path automatic balance regulation in laser phototypesetting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106406048A (en) * | 2016-11-25 | 2017-02-15 | 深圳市东方宇之光科技股份有限公司 | Resolution ratio switching method for drum imaging and device thereof |
| CN110967929A (en) * | 2018-09-30 | 2020-04-07 | 深圳市印之明科技有限公司 | System and method for adjusting light spot dislocation scanning time sequence of photoetching machine |
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Address after: 518000 Dazu laser building, 9 new West Road, North Nanshan District high tech park, Shenzhen, Guangdong Patentee after: HANS LASER TECHNOLOGY INDUSTRY GROUP CO., LTD. Address before: No. 5 road 518057 in Guangdong province Shenzhen city Nanshan District high tech park of Pine Hill Factory District No. 8 Patentee before: Dazu Laser Sci. & Tech. Co., Ltd., Shenzhen |
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